A new digital detail enhancement algorithm based on Gaussian and restriction filter is proposed. This algorithm adopts a base component and a detail component extracted by Gaussian and restriction filter, and the two components are compressed through gamma transform to fit the display dynamic range, and then they are recombined to obtain the output-enhancement image.The proposed algorithm is compared with traditional unsharp masking (UM) algorithm and the effectiveness of the proposed algorithm on restricting the ripple phenomenon is shown. Experimental results demonstrate that the proposed algorithm has good performance in detail enhancement.